Analysis of 2. gamma. and. pi. sup +. pi. sup minus. gamma. decays of. eta. and. eta. prime using chiral anomalies

Journal Article · Mon Oct 01 04:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.42.2419· OSTI ID:6228237

Ko, P ^[1]; Truong, T N ^[2]

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1. Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago, IL (USA)
2. Enrico Fermi Institute, University of Chicago, Chicago, IL (USA) Department of Physics, University of Chicago, Chicago, IL (USA) Centre de Physique Theorique de l'Ecole Polytechnique, 91128 Palaiseau (France)

Using chiral anomalies for {eta},{eta}{prime}{r arrow}2{gamma} and {eta}{r arrow}{pi}{sup +}{pi}{sup {minus}}{gamma} amplitudes, we determine that the {eta},{eta}{prime} mixing angle {theta}{sub {ital P}}={minus}20.8{degree}{plus minus}1.6{degree}, {ital f}{sub 8}/{ital f}{sub {pi}}=1.23{plus minus}0.06, and {ital f}{sub 0}/{ital f}{sub {pi}}=1.04{plus minus}0.07. Predictions are made for the rate and dipion spectra for {eta},{eta}{prime}{r arrow}{pi}{sup +}{pi}{sup {minus}}{gamma}.

• OSTI ID: 6228237
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 42:7; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645300 -- High Energy Physics-- Particle Invariance Principles & Symmetries
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BOSONS
CHIRAL SYMMETRY
DECAY AMPLITUDES
ELEMENTARY PARTICLES
ETA MESONS
ETA PRIME-958 MESONS
HADRONS
MESONS
PIONS
PIONS MINUS
PIONS PLUS
PSEUDOSCALAR MESONS
RADIATIVE DECAY
SYMMETRY
TRANSITION AMPLITUDES